A kind of automobile gear control method and system
A control method and control system technology, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as loss of P gear function, failure to lock the door of the whole vehicle, secondary damage to the gearbox, etc. , to prevent secondary damage
Active Publication Date: 2022-07-26
GUANGZHOU AUTOMOBILE GROUP CO LTD
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AI Technical Summary
Problems solved by technology
Partial power-off and automatic locking of the P gear only refers to the vehicle speed signal, without reference to the output shaft speed signal of the gearbox and the speed signal of the drive motor. When the vehicle speed is lost, the P gear function will be lost, and even the gearbox will be damaged twice.
Some vehicles can only return to ACC when the power is turned off in non-P gear, and cannot return to OFF, resulting in the failure of the vehicle to lock the door and feed power without sleep for a long time
Method used
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Embodiment 1
[0065] Corresponding to the first embodiment of the present invention, the second embodiment of the present invention further provides a vehicle gear control system, including:
[0066] The vehicle controller VCU or transmission controller TCU is used to judge whether the vehicle is in a non-P gear power-off condition when the vehicle is powered off. After judging that the vehicle is in a non-P gear power-off condition, the P gear is sent. The parking request signal is sent to the P-gear controller; and after obtaining the P-gear lock state fed back by the P-gear controller, a sleep command is sent to the P-gear controller and the SCM shifter;
[0067] The SCM shifter is used to send the current shift lever position to the vehicle controller VCU or the transmission controller TCU through the shift lever gear request signal via the CAN bus;
[0068] The P block controller is used to perform the parking operation according to the P block parking request signal sent by the vehicl...
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The invention discloses a vehicle gear control method and system, wherein the vehicle gear control method includes: step S1, the vehicle controller VCU or the transmission controller TCU judges whether the vehicle is in a non-P state when the vehicle is powered off. In step S2, after judging that the whole vehicle is in a non-P gear down power condition, the vehicle controller VCU or the transmission controller TCU sends a P-gear parking request signal to the P-gear controller; Step S3, After the vehicle controller VCU or the transmission controller TCU obtains the P gear locked state fed back by the P gear controller, it sends a sleep command to the P gear controller and the SCM shifter. Even in the case of EPB failure, the present invention can maximally consider the parking and anti-theft safety for the user and the driver after the non-P gear is powered off.
Description
technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a method and a system for controlling a gear position of an automobile. Background technique [0002] Modern automobiles use more and more electronic mechanical control. With the rapid development of new energy vehicles and the popularization and application of intelligent driving, more attention has been paid to parking safety, in addition to the conventional electronic parking system EPB , Another set of parking redundancy technology is considered more among them, which is the E-Parking control system (electronic P-block parking system). The execution target of the electronic P-gear parking system is the gearbox of a traditional fuel vehicle or the drive motor of a new energy electric vehicle, and locks and unlocks the gearbox or the output shaft of the drive motor when the vehicle is lower than a certain speed. The electronic P-block parking system is mainly c...
Claims
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IPC IPC(8): F16H61/02F16H63/34
CPCF16H61/0204F16H63/34
Inventor 杨斌刘新波黎明政
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD